`covid19learning.org`

DNSSEC	⚠️ Not signed
A	18.67.130.6^{🇺🇸 Amazon18.67.128.0/22}
		PTR	`server-18-67-130-6.gru1.r.cloudfront.net`
A	18.67.130.61^{🇺🇸 Amazon18.67.128.0/22}
A	18.67.130.93^{🇺🇸 Amazon18.67.128.0/22}
A	18.67.130.117^{🇺🇸 Amazon18.67.128.0/22}
NS	`ns-786.awsdns-34.net` ⭐
		A	2600:9000:5303:1200::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-786.awsdns-34.net`
		A	205.251.195.18^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-786.awsdns-34.net`
NS	`ns-1183.awsdns-19.org`
		A	2600:9000:5304:9f00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1183.awsdns-19.org`
		A	205.251.196.159^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1183.awsdns-19.org`
NS	`ns-1872.awsdns-42.co.uk`
		A	2600:9000:5307:5000::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1872.awsdns-42.co.uk`
		A	205.251.199.80^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1872.awsdns-42.co.uk`
NS	`ns-456.awsdns-57.com`
		A	2600:9000:5301:c800::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-456.awsdns-57.com`
		A	205.251.193.200^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-456.awsdns-57.com`
SOA	`ns-786.awsdns-34.net`awsdns-hostmaster@amazon.com serial=1

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1775951003

Subdomains

www.covid19learning.org

Same first word

covid19learning.org

DNS History

56 records (8 active, 48 former)

●NSns-1183.awsdns-19.org2020-04-07 → 2026-04-11 · 2 obs

● 2020-04-07 15:37:52
● 2026-04-11 23:54:56

●NSns-1872.awsdns-42.co.uk2020-04-07 → 2026-04-11 · 2 obs

● 2020-04-07 15:37:52
● 2026-04-11 23:54:56

●NSns-456.awsdns-57.com2020-04-07 → 2026-04-11 · 2 obs

● 2020-04-07 15:37:52
● 2026-04-11 23:54:56

●NSns-786.awsdns-34.net2020-04-07 → 2026-04-11 · 2 obs

● 2020-04-07 15:37:52
● 2026-04-11 23:54:56

○A108.158.122.1092026-04-01 → 2026-04-11 · 11 obs

○ 2026-04-01 07:53:50
● 2026-04-01 19:13:14
● 2026-04-01 23:38:04
○ 2026-04-02 07:34:14
○ 2026-04-10 22:58:34
● 2026-04-10 23:47:36
○ 2026-04-11 01:55:42
○ 2026-04-11 17:16:30
● 2026-04-11 20:09:32
○ 2026-04-11 23:02:54
○ 2026-04-11 23:54:56

○A108.158.122.732026-04-01 → 2026-04-11 · 11 obs

○A108.158.122.952026-04-01 → 2026-04-11 · 11 obs

○A108.158.122.962026-04-01 → 2026-04-11 · 11 obs

○A13.224.227.142020-04-07 → 2020-04-07 · 3 obs

● 2020-04-07 15:37:52
○ 2026-02-15 19:06:46
○ 2026-04-11 23:54:56

○A13.224.227.812020-04-07 → 2020-04-07 · 3 obs

● 2020-04-07 15:37:52
○ 2026-02-15 19:06:46
○ 2026-04-11 23:54:56

○A13.224.227.842020-04-07 → 2020-04-07 · 3 obs

● 2020-04-07 15:37:52
○ 2026-02-15 19:06:46
○ 2026-04-11 23:54:56

○A13.224.227.882020-04-07 → 2020-04-07 · 3 obs

● 2020-04-07 15:37:52
○ 2026-02-15 19:06:46
○ 2026-04-11 23:54:56

○A13.33.235.1062026-03-27 → 2026-03-27 · 4 obs

○ 2026-03-27 03:24:06
● 2026-03-27 09:04:52
○ 2026-03-27 19:51:06
○ 2026-04-11 23:54:56

○A13.33.235.1162026-03-27 → 2026-03-27 · 4 obs

○ 2026-03-27 03:24:06
● 2026-03-27 09:04:52
○ 2026-03-27 19:51:06
○ 2026-04-11 23:54:56

○A13.33.235.222026-03-27 → 2026-03-27 · 4 obs

○ 2026-03-27 03:24:06
● 2026-03-27 09:04:52
○ 2026-03-27 19:51:06
○ 2026-04-11 23:54:56

○A13.33.235.772026-03-27 → 2026-03-27 · 4 obs

○ 2026-03-27 03:24:06
● 2026-03-27 09:04:52
○ 2026-03-27 19:51:06
○ 2026-04-11 23:54:56

○A13.33.252.1032026-03-08 → 2026-03-08 · 6 obs

○ 2026-03-08 00:30:14
● 2026-03-08 05:12:06
○ 2026-03-08 08:08:30
● 2026-03-08 18:39:10
○ 2026-03-08 22:31:58
○ 2026-04-11 23:54:56

○A13.33.252.1212026-03-08 → 2026-03-08 · 6 obs

○ 2026-03-08 00:30:14
● 2026-03-08 05:12:06
○ 2026-03-08 08:08:30
● 2026-03-08 18:39:10
○ 2026-03-08 22:31:58
○ 2026-04-11 23:54:56

○A13.33.252.182026-03-08 → 2026-03-08 · 6 obs

○ 2026-03-08 00:30:14
● 2026-03-08 05:12:06
○ 2026-03-08 08:08:30
● 2026-03-08 18:39:10
○ 2026-03-08 22:31:58
○ 2026-04-11 23:54:56

○A13.33.252.462026-03-08 → 2026-03-08 · 6 obs

○ 2026-03-08 00:30:14
● 2026-03-08 05:12:06
○ 2026-03-08 08:08:30
● 2026-03-08 18:39:10
○ 2026-03-08 22:31:58
○ 2026-04-11 23:54:56

○A18.160.18.1202026-02-17 → 2026-03-28 · 129 obs

○ 2026-02-17 22:18:32
● 2026-02-17 23:19:20
● 2026-02-18 00:10:02
○ 2026-02-18 07:08:52
● 2026-02-18 08:06:02
○ 2026-02-18 08:55:54
○ 2026-02-18 10:37:50
● 2026-02-18 12:22:14
○ 2026-02-18 19:58:56
● 2026-02-19 00:09:44
○ 2026-02-19 01:30:14
● 2026-02-19 06:22:20
○ 2026-02-19 09:15:24
○ 2026-02-19 11:07:34
● 2026-02-19 12:48:24
○ 2026-02-19 13:29:04
○ 2026-02-19 20:57:24
● 2026-02-19 22:17:18
● 2026-02-20 00:14:28
○ 2026-02-20 00:46:06
○ 2026-02-20 04:20:34
● 2026-02-20 06:13:24
○ 2026-02-20 08:43:12
● 2026-02-20 10:54:54
○ 2026-02-20 12:48:38
○ 2026-02-21 08:26:36
● 2026-02-21 11:08:04
● 2026-02-21 13:40:40
○ 2026-02-21 14:52:14
● 2026-02-21 15:52:30
● 2026-02-22 00:11:38
○ 2026-02-22 04:23:50
○ 2026-02-22 17:19:42
● 2026-02-22 19:06:04
○ 2026-02-22 19:51:50
○ 2026-02-23 11:11:32
● 2026-02-24 00:06:38
● 2026-02-24 02:31:48
○ 2026-02-24 04:19:56
○ 2026-02-24 21:41:52
● 2026-02-25 00:12:06
○ 2026-02-25 04:40:40
○ 2026-02-25 21:34:06
● 2026-02-25 23:24:42
○ 2026-02-26 01:07:30
● 2026-02-26 10:17:28
● 2026-02-26 14:25:30
○ 2026-02-26 16:07:52
○ 2026-02-27 18:54:12
● 2026-02-28 00:14:28
● 2026-02-28 02:01:00
○ 2026-02-28 07:07:18
● 2026-02-28 13:45:16
○ 2026-02-28 16:05:04
○ 2026-02-28 22:42:56
● 2026-03-01 00:13:10
○ 2026-03-01 00:54:22
○ 2026-03-01 02:29:58
● 2026-03-01 04:37:54
○ 2026-03-01 08:36:08
○ 2026-03-01 20:23:32
● 2026-03-01 22:37:56
○ 2026-03-02 07:31:32
● 2026-03-03 01:35:02
○ 2026-03-03 15:59:10
● 2026-03-03 21:48:04
○ 2026-03-04 01:37:08
● 2026-03-04 07:40:14
○ 2026-03-04 09:02:50
● 2026-03-05 00:36:28
○ 2026-03-05 05:53:50
○ 2026-03-06 21:28:46
● 2026-03-07 00:12:04
○ 2026-03-07 01:24:12
● 2026-03-07 02:36:48
○ 2026-03-07 03:47:30
● 2026-03-07 16:50:56
○ 2026-03-07 23:37:50
○ 2026-03-08 22:31:58
● 2026-03-09 07:21:20
○ 2026-03-09 13:19:14
● 2026-03-10 06:51:14
○ 2026-03-10 08:19:28
○ 2026-03-16 01:05:50
● 2026-03-16 04:15:22
○ 2026-03-16 07:42:58
● 2026-03-16 12:17:50
○ 2026-03-16 19:48:26
○ 2026-03-17 00:19:16
● 2026-03-17 22:41:58
○ 2026-03-17 23:32:56
○ 2026-03-18 09:07:28
● 2026-03-18 20:40:20
○ 2026-03-18 21:14:26
● 2026-03-19 00:14:10
○ 2026-03-19 01:49:52
○ 2026-03-19 03:16:50
● 2026-03-19 06:00:34
○ 2026-03-19 10:43:32
● 2026-03-20 03:18:16
○ 2026-03-20 04:50:14
○ 2026-03-20 16:21:26
● 2026-03-20 19:53:14
○ 2026-03-20 20:56:42
● 2026-03-21 00:13:00
● 2026-03-21 04:04:32
○ 2026-03-21 06:35:34
● 2026-03-22 13:46:24
○ 2026-03-22 22:42:30
○ 2026-03-23 02:27:12
● 2026-03-23 03:21:08
● 2026-03-23 06:36:14
○ 2026-03-23 07:27:00
● 2026-03-24 04:42:10
○ 2026-03-24 05:38:54
○ 2026-03-25 01:15:58
● 2026-03-25 10:42:10
● 2026-03-25 13:15:18
○ 2026-03-25 15:01:42
○ 2026-03-26 00:18:06
● 2026-03-26 03:22:06
○ 2026-03-26 04:47:26
○ 2026-03-27 01:22:34
● 2026-03-27 03:24:06
○ 2026-03-27 09:04:52
● 2026-03-27 19:51:06
● 2026-03-28 03:13:32
○ 2026-03-28 09:21:20
○ 2026-04-11 23:54:56

○A18.160.18.302026-02-17 → 2026-03-28 · 129 obs

○A18.160.18.492026-02-17 → 2026-03-28 · 129 obs

○A18.160.18.652026-02-17 → 2026-03-28 · 129 obs

○A18.65.25.142026-02-15 → 2026-03-20 · 106 obs

○ 2020-04-07 15:37:52
● 2026-02-15 19:06:46
○ 2026-02-16 01:58:34
● 2026-02-16 08:59:18
○ 2026-02-16 13:55:00
● 2026-02-16 14:56:34
○ 2026-02-17 00:20:48
○ 2026-02-17 14:57:38
● 2026-02-17 20:49:10
○ 2026-02-17 21:27:48
● 2026-02-17 22:18:32
○ 2026-02-17 23:19:20
○ 2026-02-18 00:10:02
● 2026-02-18 07:08:52
○ 2026-02-18 08:06:02
○ 2026-02-18 08:55:54
● 2026-02-18 09:59:38
○ 2026-02-18 10:37:50
○ 2026-02-18 12:22:14
● 2026-02-18 19:58:56
○ 2026-02-19 00:09:44
● 2026-02-19 01:30:14
○ 2026-02-19 06:22:20
○ 2026-02-19 09:15:24
● 2026-02-19 11:07:34
○ 2026-02-19 12:48:24
○ 2026-02-19 13:29:04
● 2026-02-19 14:54:54
● 2026-02-19 20:57:24
○ 2026-02-19 22:17:18
○ 2026-02-20 06:13:24
● 2026-02-20 08:43:12
○ 2026-02-20 10:54:54
● 2026-02-20 12:48:38
○ 2026-02-20 22:32:00
● 2026-02-21 00:11:20
● 2026-02-21 08:26:36
○ 2026-02-21 11:08:04
○ 2026-02-21 13:40:40
● 2026-02-21 14:52:14
○ 2026-02-21 15:52:30
○ 2026-02-22 04:23:50
● 2026-02-22 17:19:42
○ 2026-02-22 19:06:04
● 2026-02-22 19:51:50
● 2026-02-22 23:37:48
○ 2026-02-23 11:11:32
○ 2026-02-25 12:04:42
● 2026-02-25 17:45:36
○ 2026-02-25 20:58:44
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● 2026-02-26 01:07:30
○ 2026-02-26 10:17:28
○ 2026-02-26 16:07:52
● 2026-02-27 12:27:54
● 2026-02-27 18:54:12
○ 2026-02-28 00:14:28
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● 2026-02-28 07:07:18
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○ 2026-03-01 00:13:10
● 2026-03-01 00:54:22
○ 2026-03-01 02:29:58
○ 2026-03-01 04:37:54
● 2026-03-01 08:36:08
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● 2026-03-03 15:59:10
○ 2026-03-03 21:48:04
○ 2026-03-05 00:36:28
● 2026-03-05 05:53:50
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○ 2026-03-05 15:35:56
● 2026-03-06 01:26:54
○ 2026-03-06 02:50:38
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● 2026-03-06 21:28:46
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○ 2026-03-07 16:50:56
● 2026-03-07 23:37:50
○ 2026-03-08 00:30:14
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● 2026-03-10 08:19:28
● 2026-03-10 14:17:20
○ 2026-03-11 03:58:34
○ 2026-03-14 00:19:14
● 2026-03-14 00:50:00
● 2026-03-14 05:50:04
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○ 2026-03-16 12:17:50
● 2026-03-16 19:48:26
○ 2026-03-17 00:19:16
○ 2026-03-19 01:49:52
● 2026-03-19 03:16:50
○ 2026-03-19 06:00:34
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● 2026-03-20 08:34:22
○ 2026-03-20 10:38:34
● 2026-03-20 11:27:18
○ 2026-03-20 16:21:26
○ 2026-03-20 19:53:14
● 2026-03-20 20:56:42
○ 2026-03-21 00:13:00
○ 2026-04-11 23:54:56

○A18.65.25.352026-02-15 → 2026-03-20 · 106 obs

○A18.65.25.522026-02-15 → 2026-03-20 · 106 obs

○A18.65.25.812026-02-15 → 2026-03-20 · 106 obs

●A18.67.130.1172026-04-05 → 2026-04-11 · 9 obs

○ 2026-04-05 04:12:44
● 2026-04-05 07:52:36
○ 2026-04-05 23:43:16
○ 2026-04-08 23:53:06
● 2026-04-09 03:50:22
○ 2026-04-09 05:25:26
○ 2026-04-11 23:02:54
● 2026-04-11 23:54:54
● 2026-04-11 23:54:56

●A18.67.130.62026-04-05 → 2026-04-11 · 9 obs

●A18.67.130.612026-04-05 → 2026-04-11 · 9 obs

●A18.67.130.932026-04-05 → 2026-04-11 · 9 obs

○A3.161.136.352026-04-02 → 2026-04-07 · 12 obs

○ 2026-04-01 23:38:04
● 2026-04-02 07:34:14
● 2026-04-02 16:10:44
○ 2026-04-03 01:30:36
○ 2026-04-04 00:26:22
● 2026-04-05 01:06:02
● 2026-04-05 04:12:44
○ 2026-04-05 07:52:36
○ 2026-04-07 15:04:18
● 2026-04-07 21:44:34
○ 2026-04-08 01:12:58
○ 2026-04-11 23:54:56

○A3.161.136.52026-04-02 → 2026-04-07 · 12 obs

○A3.161.136.502026-04-02 → 2026-04-07 · 12 obs

○A3.161.136.802026-04-02 → 2026-04-07 · 12 obs

○A3.164.206.1092026-03-22 → 2026-03-26 · 15 obs

○ 2026-03-22 13:46:24
● 2026-03-22 22:42:30
○ 2026-03-23 02:27:12
○ 2026-03-24 12:26:10
● 2026-03-24 22:14:16
● 2026-03-25 01:15:58
○ 2026-03-25 10:42:10
○ 2026-03-25 13:15:18
● 2026-03-25 15:01:42
● 2026-03-26 00:18:06
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● 2026-03-26 04:47:26
● 2026-03-26 07:36:40
○ 2026-03-26 09:59:14
○ 2026-04-11 23:54:56

○A3.164.206.1252026-03-22 → 2026-03-26 · 15 obs

○A3.164.206.1272026-03-22 → 2026-03-26 · 15 obs

○A3.164.206.712026-03-22 → 2026-03-26 · 15 obs

○A3.167.37.1052026-03-15 → 2026-03-19 · 8 obs

○ 2026-03-14 20:24:18
● 2026-03-15 07:33:38
● 2026-03-15 19:43:08
○ 2026-03-16 01:05:50
○ 2026-03-19 06:00:34
● 2026-03-19 10:43:32
○ 2026-03-20 03:18:16
○ 2026-04-11 23:54:56

○A3.167.37.322026-03-15 → 2026-03-19 · 8 obs

○ 2026-03-14 20:24:18
● 2026-03-15 07:33:38
● 2026-03-15 19:43:08
○ 2026-03-16 01:05:50
○ 2026-03-19 06:00:34
● 2026-03-19 10:43:32
○ 2026-03-20 03:18:16
○ 2026-04-11 23:54:56

○A3.167.37.52026-03-15 → 2026-03-19 · 8 obs

○ 2026-03-14 20:24:18
● 2026-03-15 07:33:38
● 2026-03-15 19:43:08
○ 2026-03-16 01:05:50
○ 2026-03-19 06:00:34
● 2026-03-19 10:43:32
○ 2026-03-20 03:18:16
○ 2026-04-11 23:54:56

○A3.167.37.732026-03-15 → 2026-03-19 · 8 obs

○ 2026-03-14 20:24:18
● 2026-03-15 07:33:38
● 2026-03-15 19:43:08
○ 2026-03-16 01:05:50
○ 2026-03-19 06:00:34
● 2026-03-19 10:43:32
○ 2026-03-20 03:18:16
○ 2026-04-11 23:54:56

○A3.174.141.1222026-02-16 → 2026-02-17 · 8 obs

○ 2026-02-15 19:06:46
● 2026-02-16 01:58:34
○ 2026-02-16 08:59:18
● 2026-02-16 13:55:00
○ 2026-02-16 14:56:34
● 2026-02-17 00:20:48
○ 2026-02-17 14:57:38
○ 2026-04-11 23:54:56

○A3.174.141.42026-02-16 → 2026-02-17 · 8 obs

○ 2026-02-15 19:06:46
● 2026-02-16 01:58:34
○ 2026-02-16 08:59:18
● 2026-02-16 13:55:00
○ 2026-02-16 14:56:34
● 2026-02-17 00:20:48
○ 2026-02-17 14:57:38
○ 2026-04-11 23:54:56

○A3.174.141.662026-02-16 → 2026-02-17 · 8 obs

○ 2026-02-15 19:06:46
● 2026-02-16 01:58:34
○ 2026-02-16 08:59:18
● 2026-02-16 13:55:00
○ 2026-02-16 14:56:34
● 2026-02-17 00:20:48
○ 2026-02-17 14:57:38
○ 2026-04-11 23:54:56

○A3.174.141.862026-02-16 → 2026-02-17 · 8 obs

○ 2026-02-15 19:06:46
● 2026-02-16 01:58:34
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○A3.175.14.1092026-04-08 → 2026-04-11 · 17 obs

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○A3.175.14.132026-04-08 → 2026-04-11 · 17 obs

○A3.175.14.452026-04-08 → 2026-04-11 · 17 obs

○A3.175.14.812026-04-08 → 2026-04-11 · 17 obs

○A99.86.91.1072026-02-17 → 2026-04-11 · 158 obs

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○A99.86.91.272026-02-17 → 2026-04-11 · 158 obs

○A99.86.91.542026-02-17 → 2026-04-11 · 158 obs

○A99.86.91.702026-02-17 → 2026-04-11 · 158 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	d0.org.afilias-nst.org, b2.org.afilias-nst.org, b0.org.afilias-nst.org	-
covid19learning.org	ns-786.awsdns-34.net, ns-456.awsdns-57.com, ns-1872.awsdns-42.co.uk, ns-1183.awsdns-19.org	1 record

✅ Authoritative Response

Server:205.251.195.18

NS records: ns-786.awsdns-34.net, ns-456.awsdns-57.com, ns-1872.awsdns-42.co.uk, ns-1183.awsdns-19.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for covid19learning.org (unsigned zone)

⏱️ Timing

Total: 1052ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.67.130.93, 18.67.130.61...`
NS	4	`ns-1183.awsdns-19.org, ns-1872.awsdns-42.co.uk...`
SOA	1	`ns-786.awsdns-34.net awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-1183.awsdns-19.org)

Analysis

Hierarchy

The parent of www.covid19learning.org is covid19learning.org.

IP Addresses

covid19learning.org maps to four IP numbers: 18.67.130.6, 18.67.130.61, 18.67.130.93 and 18.67.130.117.

other host names include app.contentcal.io, msaii.com, d1xucf9ijuhdkt.cloudfront.net, radiologymasterclass.co.uk and www.adamantlinks.com; they share IP numbers with covid19learning.org.

Name Servers

covid19learning.org delegates to four name servers: ns-456.awsdns-57.com, ns-786.awsdns-34.net, ns-1183.awsdns-19.org and ns-1872.awsdns-42.co.uk.

covid19learning.org at least partially shares name servers with other domains, for instance finnairplusshop.com, dev.aws.mybirdbuddy.com, plus-belle01.jp, yell.plus and planetwordfind.com.

Host names with two IP numbers: ns-456.awsdns-57.com points to 2600:9000:5301:c800::1 and 205.251.193.200; ns-786.awsdns-34.net points to 2600:9000:5303:1200::1 and 205.251.195.18; ns-1183.awsdns-19.org points to 2600:9000:5304:9f00::1 and 205.251.196.159; ns-1872.awsdns-42.co.uk points to 2600:9000:5307:5000::1 and 205.251.199.80.

covid19learning.org - robtex.com